Billiard-ball



T R U B H G (No Model.)

BILLIARD BALL.

Patentd Jan. 30, 1894.

m5 NATIONAL moan/mama comum UNITED. STATES PATENT OFFICE.

GEORGE H. BURT, OF MILLBURN, NEW JERSEY.

BlLLl ARD-BALL.

SPECIFICATION forming part of Letters Patent No. 513,876, dated. January 30, 1894. Application filed November 1, 1 .893. Serial No. $89,715. (No model.)

To all whom it may concern: 7

Be it known that I, GEORGE H. BURT, a citizen of the United States, residing at Millburn, in the-county of Essexand State of New Jersey, have invented certain new and useful Improvements in Billiard-Balls; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to balls for use in playing pool and other games, where the balls are marked for distinction from each other. The distinguishing marks which are ordinarily in the form ofcircumferential strips, or small, circular numbered spots, or both, haveheretofore been made by coloring the surface of the ball, to the desired extent, or by inlaying the spot or strip. The objection to the former is that in use the coloring is soon worn off and needs to be renewed, while with the latter, which is usually a structure of composition with a core of inferior material covered by a thinshell of better material, the frequent concussion of the balls results in the loosening or separation of the shell and spot from the core. Besides this defect in the composition ball thus made, there is a further objection to it because of its cost and the number of operations to make it. With these objections to pool balls as heretofore made, in view, I have aimed to produce a parti-colored or marked ball of composition of such homogeneity as to have no part that can come loose with reference to another, and having its markings provided in such a way as to admit of re-turning -or re-dressing to restore its sphericity when such shall be necessary by reason of wear, without any obliteration whatever of the markings.

With the objects named in view, my invention, therefore consists in a composition, marked ball, and in the method employed in making the same, substantially as and for the purpose hereinafter specified.

In the annexed drawings, Figure 1, is a per spective view of the several parts of my ball before their union. Fig. 2, is a section through the completed ball. Fig. 3, is a perspective view of'the same.

In carrying my invention into practice, I form of composition, by the use of dies, or otherwise the sections or parts shown in Fig.

-1, designated respectively A, B, and O, which constitute each a segment of a sphere. The parts A and B are of like color, while the other is of a different color, and in the completed ball occupies the space between the other two. For convenience, I shall term the parts A, and B the end sections and the other the middle section. Formed on and projecting from the center of the plane or flat portion of the end section A is a cylindrical shank D that has such length as to extend entirely through an axial opening a at the center of the middle section and project a short distance therefrom, into a shallow circular cavity b in the plane face of the other end section B. These sections being assembled as indicated they are placed in suitable dies and there subjected to heat, preferably 300, and pressure of preferably four hundred tons, which open ates tofuse or soften and unite them into an integral or homogeneous mass, the nature of the composition employed being such as to enable this to be done, and without effecting any disturbance in the coloring of the respective sections or the exact demarcation thereof in the finished ball.

As each section is a solid color, it will be seen that the ball will stand considerable turning or dressing to compensate for wear without impairment of the distinctive colors or the production of a shell or layer apt to be easily injured or loosened by the concussion of the balls.

When it is desired to provide a number spot, a radial cylindrical opening 0' is formed in the middle section running from the opening 0 therein to the periphery, in which is placed a previously formed plug E .of compo-' sition whose inner end is curved to fit the pe riphery of the shank D and whose outer end is spherically convex. Said plug is put in its opening at the time the sections are assembled, and with them is subjected to the heat and pressure to unite them. To enable said spot to be bored out or otherwise readily removed, a thin tube or cylindrical shell F is placed around the same of such nature as not to fuse and unite either with the plug or the contiguous portion of the section 0, so that said plug is joined only to the shank D.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

l. A ball composed of a central ring-like section, an end section with cylindrical shank extended through the bore of the central section, an opposite end section having a cavity to receive the end of said shank, and a plug inserted in the central portion, and the whole made homogeneous, substantially as shown and described.

2; A ball composed of a central ring-like section and an end section with cylindrical shank extended through the bore of the cylindrical section, an opposite end section having a cavity to receive the end of the said shank and a plug inserted in the central portion at right angles to the said shank as set forth.

3. A ball composed of a central ring like section, and an end section with cylindrical shank extended through the bore of the cylindrical section, an opposite end section having a cavity to receive the end of the said shank and a plug inserted in the central portion at right angles to the said shank and a thin metallic tube around said plug.

In testimony whereof Iaffix my signature in presence of two witnesses.

GEORGE H. BURT.

Witnesses:

WILLIAM S. BLOSSINGTON, LEONARD F. BOLLMAN. 

